c#与sql server远程连接

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;


namespace WindowsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public void button1_Click(object sender, EventArgs e)
        {
           
             String ConStr = "server=192.168.1.123;user id=sa;pwd=sa;database=AD";

             SqlConnection thisConnectin = new SqlConnection(ConStr);

             thisConnectin.Open();

             MessageBox.Show("连接成功");